Haikou UV index in May
Typical ultraviolet levels for Haikou during May, from the past year of data.
Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
May average
Haikou UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting Haikou in May?
In May, Haikou's typical UV index is about 13.6008 — a extreme risk level. Extreme UV. Avoid sun exposure, seek shade, and use comprehensive protection: clothing, sunscreen, and a hat.
Across the year, Haikou sees the strongest UV in Summer, peaking around 13.6833 in June. Plan sun protection accordingly.